Scientists Square Off Over Fracking's Impact on Climate

Last year, a scientist from Cornell University in Ithaca, New York published a paper in a scientific journal. The journal is called Climatic Change. Robert Howarth is the scientist who published the paper. He teaches environmental scientist at Cornell. He got the idea for the paper about three years ago. Thatís when the region around Ithaca was drawing interest from the oil and gas industry because it sits on top of the Marcellus shaleóa vast deposit of natural gas.